From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15DBEC43381 for ; Mon, 18 Mar 2019 06:44:47 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4C1F420643 for ; Mon, 18 Mar 2019 06:44:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="Ahf1oZKX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C1F420643 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 44N69l3hSCzDqL2 for ; Mon, 18 Mar 2019 17:44:43 +1100 (AEDT) Received: from ozlabs.org (bilbo.ozlabs.org [203.11.71.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 44N67f5cPgzDqJS for ; Mon, 18 Mar 2019 17:42:54 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="Ahf1oZKX"; dkim-atps=neutral Received: by ozlabs.org (Postfix, from userid 1007) id 44N67d4hyVz9sBF; Mon, 18 Mar 2019 17:42:53 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1552891373; bh=BbP2MHmDC/b9d7Ri0Yxo1eyXk/f4RC2IkM590qzWA7g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ahf1oZKXxhT9UmDoVcXUcPEYFVx79+AG5FU0LxROm1L58XgjYnc5kJByBfco6YszZ URxYWeF+kbj2shdgGnV8kGvjTdIMncmjHaWzpT+vcqeFHo0OWjgQb72Rih66jVTxEi YY5zpmzSJ1vhzV0yK7XM5Ar25vsqkjqtOhxTzYzk= Date: Mon, 18 Mar 2019 17:42:16 +1100 From: David Gibson To: =?iso-8859-1?Q?C=E9dric?= Le Goater Subject: Re: [PATCH v3 15/17] KVM: PPC: Book3S HV: XIVE: activate XIVE exploitation mode Message-ID: <20190318064215.GM6874@umbus.fritz.box> References: <20190315120609.25910-1-clg@kaod.org> <20190315120609.25910-16-clg@kaod.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="HL3CiL6n73+IAdG4" Content-Disposition: inline In-Reply-To: <20190315120609.25910-16-clg@kaod.org> User-Agent: Mutt/1.11.3 (2019-02-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, Paul Mackerras , kvm@vger.kernel.org, kvm-ppc@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" --HL3CiL6n73+IAdG4 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 15, 2019 at 01:06:07PM +0100, C=E9dric Le Goater wrote: > Full support for the XIVE native exploitation mode is now available, > advertise the capability KVM_CAP_PPC_IRQ_XIVE for guests running on > PowerNV KVM Hypervisors only. Support for nested guests (pseries KVM > Hypervisor) is not yet available. XIVE should also have been activated > which is default setting on POWER9 systems running a recent Linux > kernel. >=20 > Signed-off-by: C=E9dric Le Goater Reviewed-by: David Gibson > --- > arch/powerpc/kvm/powerpc.c | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) >=20 > diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c > index bb51faf29162..d70b19f8725b 100644 > --- a/arch/powerpc/kvm/powerpc.c > +++ b/arch/powerpc/kvm/powerpc.c > @@ -573,10 +573,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, l= ong ext) > #ifdef CONFIG_KVM_XIVE > case KVM_CAP_PPC_IRQ_XIVE: > /* > - * Return false until all the XIVE infrastructure is > - * in place including support for migration. > + * We need XIVE to be enabled on the platform (implies > + * a POWER9 processor) and the PowerNV platform, as > + * nested is not yet supported. > */ > - r =3D 0; > + r =3D xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE); Nit: && is already a logical operation, so there should be no need for the '!!' here. > break; > #endif > =20 --=20 David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. 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